.msg_single {
    padding: 10px;
    border-bottom: 1px solid #DDD;
    line-height: 2;
    overflow: auto;
}

.msg_single:hover {
    background-color: #F9F9F9;
}

.msg_left {
    float: left;
    width: 550px;
}

.re_avatar {
    float: left;
    margin-right: 10px;
}

.re_user {
    float: left;
}

.re_from {
    color: #999;
    font-family: 宋体;
    font-size: 90%;
}

.msg_right {
    text-align: right;
}

.msg_new {
    font-weight: bold;
}

/* letter */
.letter_single {
    padding: 10px;
    border-bottom: 1px solid #DDD;
    line-height: 2;
    overflow: auto;
}
.letter_left {
    float: left;
    width: 550px;
}
.letter_avatar {
    float: left;
    margin-right: 10px;
}
.letter_user {
}
.letter_content p {
    margin: 0;
}
.letter_right {
    text-align: right;
}
/* END: letter */